Best time to visit Incheon
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in Incheon
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on Incheon).
- 1
Seoul Private Layover Tour from the Airport with a Local - 2
Private DMZ Layover Tour from Incheon Airport or Cruise Port - 3
Private Guided Tour For Nami Alpaca Rail bike and Seoraksan - 4
Best of Incheon Night Tour Private Experience - 5
Seoul Highlights Private Layover Tour from Incheon Airport - 6
Flexible Private Guided Tour In Suwon(Optional Incheon Layover)
Last refreshed 2026-06-15.
Similar climatesSeoul97% · Busan92% · Gyeongju91%
Other destinations with the most-alike year-round climate to Incheon (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against Incheon's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | -5–3 | -2 | 5 | 53 | 10.6 | 52% | 18 | 171 | 2 | Quiet | 5 |
| Feb | -3–5 | 1 | 5 | 54 | 10.8 | 56% | 19 | 169 | 3 | Quiet | 5 |
| Mar | 1–11 | 7 | 6 | 55 | 9.2 | 56% | 20 | 206 | 4 | Quiet | 7 |
| Apr | 7–16 | 13 | 6 | 61 | 10.2 | 54% | 21 | 207 | 5 | Quiet | 8 |
| May | 12–21 | 19 | 9 | 98 | 10.9 | 62% | 20 | 218 | 5 | Quiet | 8 |
| Jun | 18–25 | 26 | 10 | 124 | 12.4 | 70% | 19 | 212 | 6 | Quiet | 8 |
| Jul | 22–28 | 31 | 18 | 230 | 12.8 | 77% | 18 | 197 | 6 | Quiet | 3 |
| Aug | 23–29 | 33 | 19 | 240 | 12.6 | 76% | 18 | 200 | 6 | Peak | 3 |
| Sep | 18–26 | 27 | 10 | 137 | 13.7 | 68% | 17 | 187 | 5 | Moderate | 8 |
| Oct | 10–19 | 17 | 6 | 68 | 11.3 | 61% | 16 | 191 | 3 | Moderate | 8 |
| Nov | 3–12 | 9 | 6 | 74 | 12.3 | 60% | 18 | 166 | 2 | Peak | 7 |
| Dec | -4–3 | -1 | 5 | 48 | 9.6 | 54% | 18 | 168 | 2 | Busy | 5 |
UV Index in Incheon by Month
UV index in Incheon peaks at 6 (high) in June, dropping to 2 (low) in December. June, July, August have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
October
8/1010–19°C (feels 17°C) · 6 rain days (68h) · 191 sun hours · 61% humidity · Moderate crowd · UV 3 (moderate) · sunniest 1 in 10 days reach 5 (moderate)
May
8/1012–21°C (feels 19°C) · 9 rain days (98h) · 218 sun hours · 62% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
April
8/107–16°C (feels 13°C) · 6 rain days (61h) · 207 sun hours · 54% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
Every month
Show the other 9 months in detail
January
5/10-5–3°C (feels -2°C) · 5 rain days (53h) · 171 sun hours · 52% humidity · Quiet crowd · UV 2 (low)
February
5/10-3–5°C (feels 1°C) · 5 rain days (54h) · 169 sun hours · 56% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
March
7/101–11°C (feels 7°C) · 6 rain days (55h) · 206 sun hours · 56% humidity · Quiet crowd · UV 4 (moderate)
June
8/1018–25°C (feels 26°C) · 10 rain days (124h) · 212 sun hours · 70% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 8 (very high)
July
3/1022–28°C (feels 31°C) · 18 rain days (230h) · 197 sun hours · 77% humidity · Quiet crowd · UV 6 (high) · sunniest 1 in 10 days reach 9 (very high)
August
3/1023–29°C (feels 33°C) · 19 rain days (240h) · 200 sun hours · 76% humidity · Peak crowd · UV 6 (high) · sunniest 1 in 10 days reach 9 (very high)
September
8/1018–26°C (feels 27°C) · 10 rain days (137h) · 187 sun hours · 68% humidity · Moderate crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 7 (high)
November
7/103–12°C (feels 9°C) · 6 rain days (74h) · 166 sun hours · 60% humidity · Peak crowd · UV 2 (low) · sunniest 1 in 10 days reach 3 (moderate)
December
5/10-4–3°C (feels -1°C) · 5 rain days (48h) · 168 sun hours · 54% humidity · Busy crowd · UV 2 (low)
Frequently asked questions about visiting Incheon
When is the best time to visit Incheon?
October is the highest-scoring month (8/10 on the Holiday Climate Index). Typical conditions: 10–19°C (6 rainy days). The top three months by score are October, May, April.
What is the worst time to visit Incheon?
August is the lowest-scoring month (3/10, capped by extreme heat). Typical conditions: 23–29°C (19 rainy days).
Is Incheon too hot in summer?
2 months (July, August) trip the heat deal-breaker in our scoring: apparent temperature crosses the comfort cap, so even with clear skies and low rain the score is held down. Plan around it if heat tolerance is low.
When are crowds lowest in Incheon?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in Incheon have good weather but fewer tourists?
April (climate 8/10, crowd index 11) and May (climate 8/10, crowd index 9) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in Incheon by month?
UV peaks at 6 (high) in June and is lowest in December at 2 (low). Monthly peak values: Jan 2, Feb 3, Mar 4, Apr 5, May 5, Jun 6, Jul 6, Aug 6, Sep 5, Oct 3, Nov 2, Dec 2.
What is the UV index in Incheon in June?
June is the peak UV month in Incheon, with a daily-peak UV index of 6 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in Incheon on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 6 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: February, April, May, June, July, August, September, October, November. Plan sun protection for the worst case, not the average.
Is air quality in Incheon bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 12 months: January, February, March, April, May, June, July, August, September, October, November, December. The worst month is March with a typical-day mean of 37 µg/m³ (hazardous); on the worst 10% of days PM2.5 reaches 66 µg/m³ (hazardous) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.